Double Parton Distributions for the Nucleon on the Lattice

21 Nov 2019, 14:25
20m
Double Parton Scattering Double Parton Scattering

Speaker

Christian Zimmermann

Description

Double parton distributions (DPDs) are an important piece in the descriptions of double hard interactions. On the lattice we calculate correlation functions of two local quark currents, which can be related to Mellin moments of DPDs. For the first moment we calculate all contributing Wick contractions for the nucleon (proton), considering several channels corresponding to the quark polarisation. Furthermore, we test to what extend a factorization into a convolution of generalized parton distributions (GPDs) is valid.

Primary author

Presentation Materials